diff --git a/test/spec_rack_callbacks.rb b/test/spec_rack_callbacks.rb
index ee830428..dad3378a 100644
--- a/test/spec_rack_callbacks.rb
+++ b/test/spec_rack_callbacks.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 
 class Flame
diff --git a/test/spec_rack_contrib.rb b/test/spec_rack_contrib.rb
index b26317cd..9fac6f0d 100644
--- a/test/spec_rack_contrib.rb
+++ b/test/spec_rack_contrib.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/contrib'
 
 context "Rack::Contrib" do
diff --git a/test/spec_rack_etag.rb b/test/spec_rack_etag.rb
index b7417805..0954c192 100644
--- a/test/spec_rack_etag.rb
+++ b/test/spec_rack_etag.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/etag'
 
diff --git a/test/spec_rack_evil.rb b/test/spec_rack_evil.rb
index 48316e3d..91a68886 100644
--- a/test/spec_rack_evil.rb
+++ b/test/spec_rack_evil.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/evil'
 require 'erb'
diff --git a/test/spec_rack_garbagecollector.rb b/test/spec_rack_garbagecollector.rb
index d29e2019..28b818d6 100644
--- a/test/spec_rack_garbagecollector.rb
+++ b/test/spec_rack_garbagecollector.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/garbagecollector'
 
diff --git a/test/spec_rack_jsonp.rb b/test/spec_rack_jsonp.rb
index d889425f..71c07fd0 100644
--- a/test/spec_rack_jsonp.rb
+++ b/test/spec_rack_jsonp.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/jsonp'
 
diff --git a/test/spec_rack_lighttpd_script_name_fix.rb b/test/spec_rack_lighttpd_script_name_fix.rb
index 9a12a2b9..55e89b73 100644
--- a/test/spec_rack_lighttpd_script_name_fix.rb
+++ b/test/spec_rack_lighttpd_script_name_fix.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/lighttpd_script_name_fix'
 
diff --git a/test/spec_rack_mailexceptions.rb b/test/spec_rack_mailexceptions.rb
index 207ef90f..f1658487 100644
--- a/test/spec_rack_mailexceptions.rb
+++ b/test/spec_rack_mailexceptions.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 
 begin
diff --git a/test/spec_rack_nested_params.rb b/test/spec_rack_nested_params.rb
index f91bae60..1cad576e 100644
--- a/test/spec_rack_nested_params.rb
+++ b/test/spec_rack_nested_params.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/nested_params'
 require 'rack/methodoverride'
diff --git a/test/spec_rack_post_body_content_type_parser.rb b/test/spec_rack_post_body_content_type_parser.rb
index 28a7ede3..ccbbae85 100644
--- a/test/spec_rack_post_body_content_type_parser.rb
+++ b/test/spec_rack_post_body_content_type_parser.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 
 begin
diff --git a/test/spec_rack_proctitle.rb b/test/spec_rack_proctitle.rb
index 8dc2bcbb..9e0c595d 100644
--- a/test/spec_rack_proctitle.rb
+++ b/test/spec_rack_proctitle.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/proctitle'
 
diff --git a/test/spec_rack_profiler.rb b/test/spec_rack_profiler.rb
index e40e0b19..29452e4c 100644
--- a/test/spec_rack_profiler.rb
+++ b/test/spec_rack_profiler.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/profiler'
 
diff --git a/test/spec_rack_sendfile.rb b/test/spec_rack_sendfile.rb
index c1255867..75e7ce27 100644
--- a/test/spec_rack_sendfile.rb
+++ b/test/spec_rack_sendfile.rb
@@ -1,3 +1,4 @@
+require 'test/spec'
 require 'rack/mock'
 require 'rack/contrib/sendfile'